How can I run multiple iterations that plot on the same graph?
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Hello all,
I want to take the equation:
4*x+((Dl*x^2)/2)-4
I would like to run 100 iterations of this equation with Dl starting as 1 and stepping by 1 until it reaches 100.
I would also like all of the lines of this equation to be plotted on the same graph.
Any suggestions on how to do this?
Thank you!
回答（2 个）
Using a vector of values x, y is an mxn matrix for m values in Dl and n values in x.
x = 1:5; % Row vector
Dl = 1:100; % row or column vector
y = 4*x+((Dl(:).*x.^2)./2)-4
plot(x,y) % 100 lines with 5 x-values
If you are new to Matlab programming, then you are probably used to a for-loop and you are plotting the curve in each iteration. If this is so, then all you have to do is add "hold on" to be associated with the figure.
x = -1:0.1:1; % setup x values
figure(101), clf, hold on;
ylim( [-10 55] ); % set y axis limits to keep the plot steady looking
grid on; grid minor;
for Dl = 1:100
y = 4*x + (Dl*x.^2)/2 - 4;
plot(x,y);
title( ['Iteration #: ' num2str(Dl) ] );
pause(0.1); % add this to see the effect of each iteration
end
figure(101), hold off;
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2021-5-26
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